Answer: D. Atomic Number
Explanation:
Atomic number of an element is the number of protons in the nucleus of an atom the element. An atom has three fundamental particles: protons, electrons and neutrons. Protons and neutrons are found in the nucleus of an atom while electrons are found outside the nucleus. The atomic number of an element determines the properties of the element. No two atoms of different elements have the same atomic number, but two or more atoms of the same element can have the same atomic number but different atomic masses. When atoms of the same element have the same atomic number but different atomic masses, they are said to be isotopes.
A volcanologist is a geologist who studies the process involved in the formation of a volcano. He also studies the eruptive nature of the volcano along with their current and historic eruptions.
The tasks done by a volcanologist do to study volcanoes are =
1. use autoclaves to imitate the interior of a volcano
2. simulate volcanic explosions with computer programs
3. study lava samples
4. listen to the sounds of the interior of a volcano
Answer: The correct answer is- C. to neutralize the acidic chyme
Bicarbonate is secreted by pancreas and released into the duodenum ( first part of small intestine) during the process of digestion.
The digestive enzymes that are secreted by the pancreas ( such as protease, amylase, lipase) into the small intestine, require an alkaline pH for their optimum functioning.
Since the chyme ( partly digested food with acidic pH, coming from the stomach) is acidic in nature, thus, the release of bicarbonate and water by the pancreas helps in neutralizing it.
This aids the final process of digestion in small intestine.
Phase where crossing over chromosomes occur is prophase 1
